Slow Cooker Pot Roast

Featured in: Garden-Inspired Meals

This comforting dish features a slow-cooked beef chuck roast seasoned with herbs and simmered gently alongside aromatic vegetables. The roast becomes fork-tender and flavorful thanks to the low, slow cooking method that enhances the natural juices. Served with creamy mashed potatoes made with butter and milk, it offers a smooth and rich complement to the savory meat and vegetables. Garnishes like fresh parsley add brightness, while optional gravy thickened from cooking juices adds depth. Ideal for a hearty, home-style meal that fills the kitchen with inviting aromas and satisfying textures.

Updated on Thu, 13 Nov 2025 16:04:00 GMT
Fork-tender Slow Cooker Pot Roast with tender carrots atop fluffy mashed potatoes. Pin
Fork-tender Slow Cooker Pot Roast with tender carrots atop fluffy mashed potatoes. | toastybasil.com

A classic comforting dish featuring tender beef pot roast slow-cooked with vegetables and rich gravy served alongside creamy mashed potatoes.

I remember the first chilly evening I made this pot roast for my family and everyone gathered around the kitchen, drawn by the wonderful aroma. It quickly became our go-to recipe for cozy weekends and special occasions.

Ingredients

  • Beef chuck roast: 3 lbs (1.4 kg)
  • Kosher salt: 1 tbsp
  • Black pepper: 1 tsp
  • Olive oil: 2 tbsp
  • Onion: 1 large, sliced
  • Garlic: 4 cloves, minced
  • Carrots: 4 large, peeled and cut into 2 inch pieces
  • Celery stalks: 3, cut into 2 inch pieces
  • Beef broth: 2 cups (480 ml), gluten-free if needed
  • Tomato paste: 2 tbsp
  • Worcestershire sauce: 1 tbsp, gluten-free if needed
  • Dried thyme: 1 tsp
  • Dried rosemary: 1 tsp
  • Bay leaves: 2
  • Yukon Gold or Russet potatoes: 2 lbs (900 g), peeled and cut into chunks
  • Unsalted butter: 4 tbsp
  • Whole milk: ½ cup (120 ml), plus more as needed
  • Salt: 1 tsp
  • Black pepper: ½ tsp
  • Optional garnish (parsley): Chopped fresh parsley

Instructions

Prepare beef:
Pat beef chuck roast dry and season all sides with salt and pepper.
Sear roast:
In a large skillet heat olive oil over medium high heat. Sear roast on all sides until browned (about 3 & 4 minutes per side). Transfer to slow cooker.
Add vegetables:
Add onion garlic carrots and celery around the roast in slow cooker.
Mix and pour liquids:
In a bowl whisk together beef broth tomato paste Worcestershire sauce thyme rosemary and bay leaves. Pour over roast and vegetables.
Cook:
Cover and cook on low for 8 hours or until beef is fork tender.
Make mashed potatoes:
About 40 minutes before serving place potatoes in large pot and cover with cold water. Add 1 tsp salt. Bring to boil reduce heat and simmer until potatoes are tender (15 & 20 minutes). Drain and return potatoes to pot. Add butter and milk mash until smooth and creamy. Season with salt and pepper. Add more milk for desired consistency.
Rest and slice:
Remove roast from slow cooker and let rest 5 minutes. Discard bay leaves. Shred or slice beef.
Serve:
Serve pot roast and vegetables over mashed potatoes. Drizzle with pan juices and garnish with fresh parsley if desired.
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This pot roast quickly became my family's most requested Sunday dinner and always brings everyone together around the table. Even picky eaters love scooping up every bite of creamy mashed potatoes and gravy.

Required Tools

Slow cooker (6 quart or larger) large skillet chef's knife cutting board large pot potato masher or ricer measuring cups and spoons

Allergen Information

Contains dairy (butter milk) and possibly fish (Worcestershire sauce). Gluten-free if using gluten-free beef broth and Worcestershire sauce. Always check ingredient labels.

Nutritional Information

Per serving: Calories 520, Total Fat 23 g, Carbohydrates 36 g, Protein 44 g

A steaming bowl of Slow Cooker Pot Roast with rich gravy and creamy mashed potatoes. Pin
A steaming bowl of Slow Cooker Pot Roast with rich gravy and creamy mashed potatoes. | toastybasil.com

A sprinkle of chopped parsley adds freshness to the finished dish. Enjoy surrounded by laughter and good company!

Recipe Q&A

How do you ensure the beef stays tender?

Cooking the roast low and slow in the slow cooker breaks down connective tissues, resulting in tender, juicy meat.

Can I use different potatoes for mashed potatoes?

Yes, Yukon Gold potatoes create creamy mash, while Russets give a fluffier texture; both work well for this dish.

What vegetables are best for flavoring the roast?

Carrots, celery, and onions add sweetness and depth, complementing the beef and herbs during the slow cooking.

How do I thicken the gravy from the cooking liquid?

Mix some cooking liquid with cornstarch and stir it back while cooking on high for 10 minutes to thicken the gravy.

Is it possible to add wine for richer flavor?

Yes, substituting half a cup of beef broth with red wine enhances the depth and richness of the overall dish.

Slow Cooker Pot Roast

Tender slow-cooked beef with vegetables paired with creamy mashed potatoes and rich gravy.

Prep duration
20 min
Cooking duration
480 min
Complete duration
500 min


Skill level Easy

Origin American

Yield 6 Portions

Dietary specifications Gluten-free

Components

Pot Roast

01 3 lbs beef chuck roast
02 1 tbsp kosher salt
03 1 tsp black pepper
04 2 tbsp olive oil
05 1 large onion, sliced
06 4 cloves garlic, minced
07 4 large carrots, peeled and cut into 2-inch pieces
08 3 celery stalks, cut into 2-inch pieces
09 2 cups beef broth (gluten-free if needed)
10 2 tbsp tomato paste
11 1 tbsp Worcestershire sauce (gluten-free if needed)
12 1 tsp dried thyme
13 1 tsp dried rosemary
14 2 bay leaves

Mashed Potatoes

01 2 lbs Yukon Gold or Russet potatoes, peeled and cut into chunks
02 4 tbsp unsalted butter
03 ½ cup whole milk, plus more as needed
04 1 tsp salt
05 ½ tsp black pepper

Optional Garnish

01 Chopped fresh parsley

Directions

Step 01

Season the roast: Pat the beef chuck roast dry and season all sides evenly with kosher salt and black pepper.

Step 02

Sear the beef: Heat olive oil in a large skillet over medium-high heat. Sear the roast on all sides until evenly browned, approximately 3 to 4 minutes per side. Transfer the roast to the slow cooker.

Step 03

Add vegetables: Arrange sliced onion, minced garlic, carrot pieces, and celery pieces around the roast inside the slow cooker.

Step 04

Prepare cooking liquid: In a separate bowl, whisk together the beef broth, tomato paste, Worcestershire sauce, dried thyme, dried rosemary, and bay leaves. Pour this mixture over the roast and vegetables in the slow cooker.

Step 05

Cook the roast: Cover and cook on low heat for 8 hours, or until the beef becomes fork-tender.

Step 06

Cook potatoes: About 40 minutes before serving, place peeled and chopped potatoes into a large pot. Cover with cold water and add 1 teaspoon salt. Bring to a boil, then reduce heat and simmer until very tender, approximately 15 to 20 minutes. Drain thoroughly.

Step 07

Mash potatoes: Return drained potatoes to the pot. Add unsalted butter and whole milk, then mash until smooth and creamy. Season to taste with salt and black pepper. Add additional milk as needed to achieve desired consistency.

Step 08

Rest and shred beef: Remove the roast from the slow cooker and let rest for 5 minutes. Discard bay leaves, then shred or slice the beef to preference.

Step 09

Assemble and serve: Serve the shredded beef and cooked vegetables over a bed of creamy mashed potatoes. Drizzle with pan juices from the slow cooker and garnish with chopped fresh parsley if desired.

Necessary tools

  • Slow cooker (6-quart or larger)
  • Large skillet
  • Chef’s knife and cutting board
  • Large pot
  • Potato masher or ricer
  • Measuring cups and spoons

Allergy information

Review each component for possible allergens and if uncertain, we recommend consulting with a healthcare professional.
  • Contains dairy (butter, milk).
  • Worcestershire sauce may contain anchovies (fish).
  • Use gluten-free broth and Worcestershire sauce to maintain gluten-free status.

Nutrient breakdown (per portion)

These values are provided as a general guide and shouldn't replace professional medical advice.
  • Calories: 520
  • Fat: 23 g
  • Carbs: 36 g
  • Protein: 44 g